How to use Map and Filter Simultaneously on an Array in JavaScript? Last Updated : 10 Sep, 2024 Comments Improve Suggest changes Like Article Like Report We are given an array and the task is to use the filter and map function simultaneously to the given array. JavaScript filter() methodThe filter() method returns a new array containing the elements that pass a certain test performed on an original array. Syntax:let newArray = oldArray.filter((currentValue, index, array) { // Returns element to new Array});JavaScript map() methodThe map() method is used to apply a function on every element in an array and returns a new array of the same size as the input array.Syntax:let newArray = oldArray.map((currentValue, index, array) { // Returns element to new Array});ApproachFirstly, by using filter() function we will retrieve those elements from an array that satisfies the given condition. As the filter() method will return the array with the required elements. Now we will apply map() method to perform the specified operations on all elements of the array returned by filter() method. Example: In this example, we are using map and filter simultaneously on an array. javascript /* Printing the name of students who play basketball using filter and map method simultaneously. */ // Taking an array of Student object let students = [ { id: "001", name: "Anish", sports: "Cricket" }, { id: "002", name: "Smriti", sports: "Basketball" }, { id: "003", name: "Rahul", sports: "Cricket" }, { id: "004", name: "Bakul", sports: "Basketball" }, { id: "005", name: "Nikita", sports: "Hockey" } ] /* Applying filter function on students array to retrieve those students Objects who play basketball and then the new array returned by filter method is mapped in order to get the name of basketball players instead of whole object.*/ let basketballPlayers = students.filter(function (student) { return student.sports === "Basketball"; }).map(function (student) { return student.name; }) console.log("Basketball Players are:"); // Printing out the name of Basketball players basketballPlayers.forEach(function (players) { console.log(players); }); OutputBasketball Players are: Smriti Bakul Comment More infoAdvertise with us Next Article How to use Map and Filter Simultaneously on an Array in JavaScript? D deekshajaindodya Follow Improve Article Tags : JavaScript Web Technologies Web technologies javaScript JavaScript-Questions +1 More Similar Reads How to serialize a Map in JavaScript ? In this article, we will discuss, the serialization of maps in JavaScript. Serialization is the conversion of an object or a data structure to another format that is easily transferrable on the network. In JavaScript, the format suitable for transferring is JSON string. So, we usually call the JSON. 2 min read How to iterate over Map elements in JavaScript ? Map() is very useful in JavaScript it organises elements into key-value pairs. This method iterates over each element in an array and applies a callback function to it, allowing for modifications before returning the updated array." The Map() keyword is used to generate the object. The map() method 3 min read How are elements ordered in a Map in JavaScript ? In JavaScript, a new object called Map was introduced in the ES6 version. 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Then use the .map() method on the reversed array to perform the task.JavaScriptlet a = [ 3 min read Like